Dredge bucket



I EETQ- \MLLIAMHTAYLUR v Get. 7, 1941.

DREDGE BUCKET w. H. TAYLOR 2,258,430

Filed Nov. 26, 1940 2 Sheets-Sheet l W QQQMX Oct. 7, 1941. w YL2,258,430

DREDGE BUCKET Filed Nov. 26, 1940 2 Sheets-Sheet 2 \MLLI M I-LTAYLDRPatented Oct. 7, 1941 2,258,430 DREDGE BUCKET.

William Hoffman Taylor, Phillipsburg, N. J., assignor to Taylor-WhartonIron and Steel Company, High Bridge, N. J., a corporation of New JerseyApplication November 26, 1940, Serial No. 367,303

Claims.

The invention provides certain improvements in dredge bucketsconstructed, arranged, and

adapted for articulation through the medium of linkage pins formed ofbar stock.

Although headless pins were suggested many years ago, and their economylong has been recognized, their use has been restricted because thelocking provisions were unsatisfactory, the usual practice being tonotch the pins so as to accommodate wedges mounted in the eyestock, andthat construction and arrangement failed of its purpose because it isinadequate to prevent motion in the front eyes of the buckets.

The object of the invention is to permit the use of headless pins byobviating the shortcomings and disadvantages of the pin locking devicesheretofore proposed and this is accomplished through the medium of maleand female eccentric provisions which are fully adequate for thepurpose.

The invention in its preferred embodiment is illustrated in theaccompanying drawings wherein Figure 1 is an end view of enough of adredge bucket to show the application of the wear compensating pin lock,parts being broken away the better to disclose the stud mounting.

Fig. 2 is a section on line 2-2 of Fig. 1.

Fig. 3 is a section on line 3-3 of Fig. 1.

Figs. 4 and 5 show, respectively, side and end views of the pin.

It will be understood that the pin 5 is supported at its ends in theconventional way by a pair of eyes, one of which is shown at 6. There isa notch at each end of the pin defined by a radial wall 1 and by aninwardly inclined wall 8. And the stock of each eye is relievedeccentrically of the pin and for the depth of the notches thereof, asdefined by walls 9 and ID. The purpose and effect of this constructionand arrangement is to provide a repository for an element H of generallyhalf circular form, its rounded portion 12 serving as a cam or maleeccentric which mates with the female eccentric wall or track Ill andhas rolling contact therewith; and its cross wall I3 being inclined incoincidence with the inclined wall of the notch in the pin whereby theeccentric or cam is maintained in proper relation to its track and, ofcourse, to the pin.

The curve of the arcuate wall or track III is generated from a pointsubstantially tangential to the circumference of the pin, or itsreceptive eye, and extends to the clear to provide an entering slot forthe cam motion pin lock ll.

The facial slot l4, when present, is useful to receive a bar or otherimplement to facilitate the mounting of the eccentric lock element ll.So also the cavities 15 in the end faces of the pin are useful toreceive and cooperate with an implement for manipulating the pin as byrotating it to place upon its installation or upon its removal.

A bracket l6 serves for the mounting of a screw stud I! which may beadvanced in a complemental guide or bore 22 so as to put thrust on thecam. The guide or bore 22 is of polygonal or equivalent section and thehead of the stud has flat faces 2| whereby the parts are withheld fromturning movement.

It will be understood that the end of the stud impinges upon the heel l8of the cam under the actuation of an adjusting nut 19 and that the partsin the adjusted position are secured by a lock-nut 20. The guide passagefor the stud in bracket I6 is so disposed with relation to the heel ofthe cam as to provide for the application at will of reactive forces forthe purpose of preventing wear on the pin ends and their bearings in thefront eyes.

Under preferred practice the buckets are provided with pin looks at eachend of the pin to insure maximum resistance to torque and the walls 8are so located with relation to the pin center that after a pin hasworked in the position as first installed, it can be removed andreversed end for end to present a new wearing surface against thebushing in the rear eye of the adjoining bucket.

The operation of the improved locking means will be apparent to thoseskilled in the art, it being sufficient to add that under extraordinaryconditions as, for example, when the maximum travel of the adjustingstuds has been reached, further adjustment can be effected by theapplication of one or more shims between the proximate faces of the camsand the pins.

Having described the invention, I claim:

1. A locking assembly for dredge bucket pins of the headless type,comprising, in combination, a pin and its supporting bearings, a camspace defined in part by a flat surface on the pin and in part by acurved track in the bearing stock, a cam having a conforming fit, and acontrolling reaction device operatively mounted with relation to thecam.

2. A locking assembly for dredge bucket pins of the headless type,comprising, in combination, a pin and its supporting bearings, a camspace defined in part by a fiat surface on the pin and in part by acurved track extending from one side of the pin to an entering slot, acam introducible through said slot and coordinating with said fiatsurface and with the track, and means for exerting pressure on the camwhereby it is effective to prevent motion of and Wear on the pin and inthe bucket eyes.

3. A locking assembly for dredge bucket pins of the headless type,comprising, in combination, a pin and its supporting bearings, a camspace defined in part by a fiat surface on the pin and in part by acurved track extending from one side of the pin to an entering slot, acam intro ducible through said slot and coordinating with said flatsurface and with the track, and a screw stud operatively mounted withrelation to the heel of the cam for maintaining pressure thereon toprevent motion of and wear of the pin and in the bucket eyes.

V 4, A dredge bucket having pin-receiving eyes with outwardly facingrecesses whose large dimension is defined by an arcuate wall whereof oneend is substantially tangential to the proximate eye and whereof theother end forms an entering slot for a filler for the recess when thepin is in place, a headless pin having radially relieved areas whichconstitute cooperating walls for the recesses, a filler cooperating withthe respective arcuate wall and with the opposed relieved area, andmeans for applying end thrust to the trailing end of the filler.

5. A dredge bucket having cylindrical pin holes for reversibly receivinga coupling pin, said pin holes terminating in part in end recesseswhereof each has a first wall generated on a curve whereof one end issubstantially tangential to the circur'nference of the pin and whereofthe other end is substantially spaced from the pin to provide a passwayto the recess, a coupling pin having notches to provide second orcooperating walls for said recesses, and a member introducible throughsaid passway and cooperating with the WILLIAM HOFFIVLAN TAYLOR.

